Apparatus for extracting oil from cotton-seed



(No Model.) 2 Sheets-Sheet 1.

W. T. FORBES. I

APPARATUS FOB. EXTRAGT'ING OIL FROM COTTON SE51}. No. 519,424. PatentedMay 8, 1894.

CONDENSER VAC. CHAMBER E VA'PO'R ATOR mcuLA'rma mub,

THE "ANIMAL umoenmma OOMPANY.

WASHINGTON. u. o.

(No Model.) 2 Sheets-Sheet 2.

W. T. FORBES. APPARATUS FOR BXTRAGTING OIL FROM COTTON SEED. No.519,424.

ong vim atlozhmg Patented May 8, 1894.

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PATENT WALTER T. FORBES, OF ATLANTA, GEORGIA.

APPARATUS FOR EXTRACTING OIL FROM COTTON-SEED.

SPEQIFIGATION forming part of Letters Patent No. 519,424, dated May8,1894. Application filed November 16, 1893. Serial No. 491,122. (Nomodel.)

To aZZ whom it may concern.-

Be it known that I, WALTER T. FORBES, a resident of Atlanta, in thecounty of Fulton and State of Georgia, have invented certain new anduseful Improvements in Processes of and Apparatus for Extracting Oilfrom Gotton-Seed; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled. in the art to which it appertains to make and use thesame.

My invention relates to an improvement in apparatus for extracting oilfrom seed,the object of the invention being to produce means whereby theoil contained in cotton seed can be readily and quickly extractedtherefrom.

A further object is to provide efficient means for extracting oil fromseed by means of a solvent and separating said solvent from the oil.

A further object is to produce a simple and efficient apparatus by meansof which oil may be separated from cotton seed and saccharine matterfrom sugar cane.

In the accompanying drawings: Figure 1 is a view illustrating myimprovements. Figs. 2, 3 and 4 are detail views.

A represents a cylinder or digester preferably of a size adapted toaccommodate a large quantity of cotton seed, which latter will be placedin baskets B, each holding preferably about one hundred pounds, and saidbaskets, containing the cotton seed, will be placed in the cylinder,through one end thereof. For this purpose the cylinder is provided atone end with a door ot adapted to be tightly closed, the other end ofthe cylinder being closed by a permanent head a. The baskets B willpreferably be made of wire netting and cylindrical in form, each baskethaving an opening at one end which will be closed by a cap B. I

A dome O is located above the cylinder A and communicates therewith,said dome'being provided with a cock 1) and a gage b and on thecylinder, a thermometer b is located. A pipe 0 communicates at one endwith the dome O and at the other end with vats c, 0 the vat 0 beingclosed and adapted to contain naphtha and the vat c being intended tocontain water. The flow of .the fluid from the vats c, 0 into the pipe 0will be controlled by means of valves 0 c and the flow of fluid from thepipe 0 into the dome C will be controlled by a valve 0 A pipe D havingperforations d is located in the upper portion of the cylinder A andextends from end to end thereof, one end of said pipe being closed. Apipe D communicates at one end with the pipe D and at 'F communicatingwith the pipe E will also be closed and then the circulating pump E willbe started; the action of which will cause a rapid circulation ofnaphtha through the cotton seed in' the cylinder A, .the naphtha, andoildissolved by it, leaving the cylinder through the pipes E andflowinginto the pipe E ,from which it will flow through the pump E andpipe D into the pipe D, from which latter it will'escape through theperforations d and become. distributed on the seed in the cylinder A.This circulation of the fluid will be continued until all the oil in theseed shall 'have been'dissolved' or extracted, when the pump E will bestopped, the valve 6 in the, .pipe F opened, and the combined oil andnaphtha will be permitted to escape through the pipe E into a receivingtank-G located below the cylinder A, the air having first been exhaustedfrom said tank as hereinafter explained. A pipe f having a valve gcommunicates'at one end with the receiving tank G'and at the other endwith a separator or evaporator H located below said receiving tank. Inconstructing the separator or evaporator H, a Vertical, cylindricalshell h is employed, in which, at diametrically opposite--points,'vertical pipes 1', i, are located, said pipes resting onshelves 1" located at thebot- 'tom of the cylinder or shell h. The lowerends ofthe pipes-2' are closed and their upper ends project through thetop of the cylindenor shell and both communicate with a p1pe 7 having avalve j. Located within the cylinder or shell his a series of annularpipes connected together alternately at diametrically opposite points byshort pipe sections is. At the upper end of each joint thus formed, theannular pipes 70 are connected alternately with the pipes t', i, bymeans of pipes Z, Z and couplings P. A pipe m communicates with thebottom annular pipe It and is provided with a valve m, said pipeterminating in a goose-neck m located under the cylinder or shell h andthe goose neck is adapted to discharge into a tank m provided at itsbottom with a valve m By providing the gooseneck in the outlet pipe m,liquid will be retained therein so that no air will be permitted toenter the annular pipes 70. A pipe n. having a valve or communicateswith the shell or cylinder H in proximity to its upper end for theadmission of steam whereby to heat the pipes in said cylinder or shelland at the lower end apipen communicates with said cylinder or shell forthe exhaust of steam therefrom, said pipe n being provided with a valve91 The pipe j, to which the pipes z are connected, communicates with avacuum chamber I and the latter communicates with a vacuum pump J. Thevacuum pump communicates with a condenser K, by means of a pipe 41.having a valve n ,which condenser comprises a cylinder 0 adapted tocontain water and a coil of pipe 0', which is The lower end connectedwith the pipe 72.. of the coil 0' extends through the cylinder 0 and isconnected with a pipe '1" having a valve 4" said pipe communicating witha closed tank q having a valved outlet q. A pipe w communicates at oneend with the upper end of the receiving tank G and at the other end withthe pipejto the right of the valve j',said pipe 20 being provided with avalve 10'. BY closing the valve j and opening the valve w the vacuumpump can be operated to exhaust the air from the receiving tank G.

The cylinder A having been charged withcotton seed and the oil extractedfrom the seed by means of naphtha made to rapidly circulate through itin the manner above explained, the oil and naphtha will be permitted toenter the receiving tank G. The air hav ing been exhausted from saidreceiving tank,

the oil and naphtha will flow rapidly into the same from the cylinder ordigester A. By thus enhancing the outflow of oil and naphtha from thecylinder or digester by means of suction, said oil and naphtha will bealmost entirely removed from the residuum. From the tank G, the naphthaand oil will be permitted to pass to the separator or exhauster H. Asthe mixture passes through the first annular pipe is, a portion of thenaphtha'com tained in it will be evaporated and will pass into one ofthe vertical pipes 5, while the oil will pass into the next annularpipe, where more of the naphtha will be separated there from, and so onto the last annular pipe.

After passing through the last annular pipe is, the oil will passthrough the pipe m, drop by drop, and discharge into the tank m entirelyfree from naphtha. The naphtha which was evaporated in its passagethrough the annular pipes and which entered the vertical pipes 'i, willpass into the vacuum chamber I, being drawn therein by the vacuum pumpJ, from which chamber it willbe made to pass, by the vacuum pump, intothe condenser, where it will be condensed and pass into the closed tank(1. Valved steam pipes n are made to communicate with the pipes 45whereby to admit steam into said pipes for cleansing the same. Apipe 8having perforations 3 passes through one end of the cylin der A inproximity to the bottom thereof and extends to the opposite end of saidcylinder. The pipe .9 is intended to convey steam into the cylinderA fora purpose presently explained, and is provided with a valve .9 wherebyto control the steam supply. A pipe 15 communioates at one end with thepipe 0 between the dome O and the valve 0 the other end of said pipe ibeing made to communicate with the coil 0 of the condenser K. Aftertheoil shall have been removed from the seed by the process abovedescribed, the valve e in pipe F will be closed and the valve .9 in thepipe 8 will be opened. Steam will now enter the pipe 5 and, escapingthrough the perforations s in said pipe 8, will impregnate the exhaustedpulp or residuum in the cylinder A and escape through the dome G intothe pipe ccarryin g with it, naphtha which may remain in the pulp orresiduum. From the pipe 0 the steam and naphtha will pass through thepipe 15 and by it be conveyed to the condenser K by which it will beoondsensed and flow into the tank q. Thus the pulp or residuum will beentirely freed from naphtha and none of the latter will be lost. Thecylinder A is preferably provided with a cock 2/. by means of which theoperator can ascertain whether or not the pulp or residuum has beenentirely freed from naphtha.

- It will be seen that by my improved apparatus the oil will beeffectually removed from the seed; that when it reaches the tank m itwill contain no naphtha and that the naphtha employed will beefiectually recovered and can be again used in carrying out the processwith a fresh supply of seed. With processes for extracting oil from seedby means of naphtha, thirty hours are required to extract the oil fromthirty tons of seed, and twelve hours are necessary to free the pulp orresiduum from naphtha. By dividing the material into lots of one hundredpounds each and subjecting it to the process above set forth, the entireprocess can be completed in six hours.

My improved apparatus is also well suited and efficient for recoveringsaccharine matter from sugar cane. hen the apparatus is used for thispurpose, the cane, after having been broken or chipped, will be placedin IIC baskets and the latter will be inserted into the cylinder A inthe same manner as above described. Water will then be allowed to passinto and fill the cylinder from the tank or vat 0 The valve e in thepipe Fis closed and then the steam is admitted into the pipe D, througha pipe'D The circulating pump E will then be started andthe water,heated by the steam entering through the pipes D, D, will be made tocirculate through the cane in the cylinder A, in the same manner as thenaphtha was circulated in extracting oil from seed as above explained.After this circulation of water has continued a sufficient length oftime to dissolve the saccharinematter contained in the cane, the pumpwill be stopped and the water andsaccharine matter will be permitted toescape from the cylinder through the pipe F into the receiving tankG,from which it will pass through the separator or evaporator, wherealarge portion of the water will be separated from it, the sirup findingits way to the tank m and the evaporated water or steam passing throughthe vacuum chamber. vacuum pump and finally through the condenser, whereit will be condensed.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is I I 1. The combination with a cylinder ordigester, of means for causing a circulation of fluid through saiddigester, a tank communicating with said cylinder or digester, aseparator or evaporator communicating with said tan k, a vacuum chambercommunicating with said separator or evaporator, a vacuum pumpcommunicating with said vacuum chamber and a condenser communicatingwith said vacuum pump, substantially as set forth.

2. The combination with a cylinder or digester adapted to receive thematerial to be treated, a pipe for conveying naphtha or other ing fromthe naphtha or solvent conducting pipe at a point between the valve andthe cylinder, or digester, to the condenser, and a steam pipedischarging into the cylinder or digester, substantially as set forth.

3. The combination with a cylinder or d1- gester adapted to receive thematerial to be treated, means for creating a circulation within thecylinder or digester, of a pipe for conducting naphtha or other solventfrom a suitable supply tank into the cylinder or digester, a valve insaid pipe, a condenser, a pipe leading from the naphtha pipe at a pointbetween the cylinder or digester and the valve therein, to thecondenser, and a pipe for conducting steam into the cylinder ordigester, substantially as set forth.

4. The combination with a cylinder or d1- gester, means for supplyingthe contents thereof with naphtha or other solvent, and for creatingacirculation therein, of atank, a pipe leadin g from the cylinder, ordigester into the tank, a pipe for the discharge of the contents ofthetank, and a pump having communication with the upper portion of thetank for withdrawing air therefrom, substantially as set forth.

5. The combination with a cylinder or digester, means for creating acirculation of its contents, and a tank into which its contents aredischarged, of a separator or evaporator into which the contents of thetank are discharged, a vacuum pump, apipe leadingout of the separator orevaporator 1n communica-

